申请人:Fujisawa Pharmaceutical Co., Ltd.
公开号:US04735957A1
公开(公告)日:1988-04-05
New thiazole derivatives of the formula: ##STR1## wherein R.sup.1 is lower alkyl, carboxy, a drivative of carboxy, hydroxymethyl, halomethyl, lower alkylthiomethyl, hydroxyiminomethyl or alkenyl which may be substituted with lower alkoxycarbonyl, pyridyl or cyano, R.sup.2 is hydrogen, hydroxy, lower alkyl, pyridyl, amino, lower alkylamino, pyridylamino, arylamino, acylamino, N-(lower)alkylN-acylamino, guanidino optionally substituted with dimethylaminomethylene, or ar(lower)alkylamino optionally substituted with lower alkoxy, R.sup.3 is lower alkyl, halo(lower)alkyl or N-containing unsaturated heterocyclic group which may be substituted with halogen, lower alkyl, lower alkoxy, carboxy, a derivative of carboxy, hydroxy, pyridyl, amino, lower alkylamino, pyridylamino, arylamino, acylamino, N-(lower)alkyl-N-acylamino, guanidino, N-oxide or ar(lower)alkylamino optionally substituted with lower alkoxy, Q is --CO--, and n is an integer of 0 or 1, provided that when both of R.sup.1 and R.sup.3 are lower alkyl then n is an integer of 1 and R.sup.2 is lower alkyl, pyridyl, amino, lower alkylamino, pyridylamino, arylamino, acylamino, N-(lower)alkyl-N-acylamino, guanidino optionally substituted with dimethylaminomethylene, or ar(lower)alkylamino optionally substituted with lower alkoxy, and when R.sup.1 is lower alkyl and R.sup.3 is halo(lower)alkyl then n is an integer of 1, and pharmaceutically acceptable salts thereof, and processes for preparation thereof and pharmaceutical composition comprising the same. These derivatives and pharmaceutically acceptable salts thereof are useful as cardiotonic agents and anti-ulcer agents.
新的噻唑衍生物的化学式为:##STR1## 其中R.sup.1是较低的烷基,羧基,羧基衍生物,羟甲基,卤代甲基,较低的烷基硫甲基,羟基亚胺甲基或烯基,该烯基可以用较低的烷氧羰基,吡啶基或氰基取代,R.sup.2为氢,羟基,较低的烷基,吡啶基,氨基,较低的烷基氨基,吡啶基氨基,芳基氨基,酰基氨基,N-(较低)烷基N-酰基氨基,瓜二氨基可选地用二甲氨基甲基取代,或者是可选地用较低的烷氧基取代的ar(较低)烷基氨基,R.sup.3是较低的烷基,卤代(较低)烷基或含氮的不饱和杂环基,该基可以用卤代,较低的烷基,较低的烷氧基,羧基,羧基衍生物,羟基,吡啶基,氨基,较低的烷基氨基,吡啶基氨基,芳基氨基,酰基氨基,N-(较低)烷基-N-酰基氨基,瓜二氨基,N-氧化物或可选地用较低的烷氧基取代的ar(较低)烷基氨基取代,Q为--CO--,n为0或1的整数,但当R.sup.1和R.sup.3都是较低的烷基时,n为1的整数,而R.sup.2为较低的烷基,吡啶基,氨基,较低的烷基氨基,吡啶基氨基,芳基氨基,酰基氨基,N-(较低)烷基-N-酰基氨基,瓜二氨基可选地用二甲氨基甲基取代,或者是可选地用较低的烷氧基取代的ar(较低)烷基氨基,而当R.sup.1为较低的烷基且R.sup.3为卤代(较低)烷基时,n为1的整数,以及其药学上可接受的盐,以及其制备方法和包含其的制药组合物。这些衍生物及其药学上可接受的盐可用作心力衰竭药物和抗溃疡药物。